like all standardized medicare supplement insurance plans, it helps pay expenses that medicare doesn't cover and lets you choose or keep any doctor who accepts medicare patients. call or go online and request your free decision guide. use this guide to help you choose from a range of aarp medicare supplement insurance plans. have the right partner at your side. consider an aarp medicare supplement insurance plan. go long. >>> welcome back. take a look at your screen. gabbing the backpack is hardly the feat of a superhero but for leon mccarthy, a cyborg hand is a reality. the dad created the hand for his son who was born missing a few fingers. welcome to the show. >> good morning. thanks for having us. >> paul, how did you come up with this idea? >> well, i found it on the internet. i had an interest in 3-d printing. i obviously had an interest in prosthetics. there is a boy in south africa named liam and a a man who collaborated to build him a hand like this. i saw it and contacted them. they helped me. they have an open source design. i was able to take the design and print it locally